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Question
Factorise the following:
6 – 216x2
Sum
Solution
6 – 216x2 = 6[1 – 36x2]
= 6[1 – (6x)2] ...[a2 – b2 = (a + b)(a – b)]
= 6(1 + 6x)(1 – 6x)
shaalaa.com
Factorisation Using Identity a2 - b2 = (a + b)(a - b)
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